Ford F-150



July, 6, 2007 AT 6:59 PM

I replaced the EGR Valve on my 99 Ford 150 P/U 4.6l engine. After replacing the valvwe the check engine light is still on and I still get a code P0401. What else do I need to do?

3 Answers



July, 6, 2007 AT 7:03 PM

If you did not clear out the codes then they will stay stored in the computer, clear them out and see if they come back on.



July, 7, 2007 AT 11:45 AM

I cleared the code and it came back. I did this twice. At the emissons testing center they told me something about a drive time to allow the computer to recognize the new EGR Valve. If the prob was corrected then shouldn't the code stay clear?



July, 8, 2007 AT 8:49 AM

Take the egr off again and clear the port of carbon all the way to the throttle plate. I use a steel coathangar. Reset the light. If it comes on after this replace the egr position sensor.

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